<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <div>
            <span>姓名:</span>
            <input type="text" v-model="name" />
        </div>
        <div>
            <span>年龄:</span>
            <input type="number" v-model="age" />
        </div>
        <div>
            <span>性别:</span>
            <select v-model="gender">
                <option value="男">男</option>
                <option value="女">女</option>
            </select>
        </div>
        <div>
            <button @click="addOrEdit()">添加/修改</button>
        </div>
        <div>
            <table border="1" cellpadding="10" cellspacing="0">
                <tr>
                    <th>序号</th>
                    <th>姓名</th>
                    <th>年龄</th>
                    <th>性别</th>
                    <th>操作</th>
                </tr>
                <tr v-for="(item, index) in list" :key="item.id">
                    <td>{{index+1}}</td>
                    <td>{{item.name}}</td>
                    <td>{{item.age}}</td>
                    <td>{{item.gender}}</td>
                    <td>
                        <button @click="del(item.id)">删除</button>
                        <button @click="edit(item.id)">编辑</button>
                    </td>
                </tr>
            </table>
        </div>
    </div>
    <script src="../vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                isEdit: false,
                name: '',
                age: 0,
                gender: '',
                currentId:'',
                list: [
                    { id: 1, name: 'Tom', age: 19, gender: '男' },
                    { id: 2, name: 'Jone', age: 21, gender: '女' },
                    { id: 3, name: 'Lily', age: 18, gender: '女' }
                ]
            },
            methods: {
                del(id) {
                    this.list = this.list.filter(item => item.id !== id)
                },
                addOrEdit(id) {
                    if (!this.name || !this.age || !this.gender) return alert('请填写完整信息')
                    if (this.isEdit) {
                        const index = this.list.findIndex(item => item.id === this.currentId);
                        this.list[index] = { id: this.currentId, name: this.name, age: this.age, gender: this.gender };
                        this.isEdit = false;
                    } else {
                        this.list.push({ id: Date.now(), name: this.name, age: this.age, gender: this.gender })
                    }
                    this.name = ''
                    this.age = 0
                    this.gender = ''
                },
                edit(id) {
                    this.isEdit = true
                    const item = this.list.find(item => item.id === id);
                    this.currentId = id
                    this.name = item.name
                    this.age = item.age
                    this.gender = item.gender
                }
            }
        })
    </script>
</body>

</html>